<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>04_作用域_面试题2</title>
</head>
<body>
<script type="text/javascript">
  var fn = function () {
    console.log(fn)
  }
  fn() // 函数

  function fn2 () {
    console.log(fn2)
  }
  fn2() // 函数


  var obj = {
    fn3: function () {
    //  console.log(fn3) //fn3 is not defined
     console.log(this.fn3) //: 这样才能找到自己的fn2
    }
  }
  obj.fn3()
</script>
</body>
</html>